Stop for overhead carriers.



able mechanism set in action, whereby such defective can will be thrownout at a suitable point of discharge.

The testing mechanism of the present invention is inclosed within a box22, and in character as follows: The pipe communicates with a bowedtubular gage spring 23 of the usual character, which is adapted toexpand or straighten under the influence of pressure, as shown in Fig.2, its normal curvature being indicated in Fig. 1. The free end of thespring has pivoted thereto a link 24, which engages the short arm 25 ofan L lever 26 which is pivoted at its elbow 27. The lever 26 abutsagainst a sprin 26 carried by a slide plate 26, which is ad ustablymounted within a guidcway 26. The position of the slide plate can beadjusted by turning a thumb screw 26, which can be locked in adjustableposition by means of a jam nut 26. The long arm of this L lever greatlyexceeds the short arm in length, so that very small variations in theposition in the free end of the bowed gage spring will be magnified manytimes at the end of the long arm of the L lever. The L lever isconnected by means of a rod 28 with a trip finger 29 which is pivoted toa bracket 30 at a point near the upper end of the finger, wherebymovements of the rod 28, imparted to the short end of the pivotedfinger, will be magnified .or accentuated at the long end of suchfinger, which is provided with a hook 30 which is adapted to engage alug 31 which outwardly projects from the end of an actuating pin 32,which is slidably mounted within a sleeve or guide- Way 33 and isprovided, on its lower end, with a cam head 34, whose side face 35 isflattened in the form shown in Fig. 3, and is adapted, when the pin isdropped, to engage a spring supported pin 36 which out wardly projectsfrom the inner face of a cam wheel 37. The cam wheel is in the formshown in Fig. 4, and is provided, in addition to the pin 36, with a stoppin 38 which lies slightly nearer the center of the cam wheel. The camwheel is mounted upon a shaft 39, driven by means of bevel pinions 40,or other suitable gearing, at such speed that the cam wheel will becompletely revolved by the passage of each, cam. In other words, if thetester wheel is provided with forty sealing heads adapted to IGCGlXGforty cans, the cam wheel will be revolved forty times during the revolution of the tester wheel. The cam wheel is adapted to engage an inwardlyextending pin 41 on the actuating pin, and the formation of the surfaceof the cam is such that the actuating pin will be raised slightly witheach revolution of the cam wheel.

The spring supported pin 36 is adapted to engage the upper end of alever 42, which is pivoted at the point 43 and is adapted to actuate adischarging runway like that shown in the application previouslyreferred to. The upper end of the lever normally underlies the pivotedcatch finger 44, which is held in engagement with the lever by means ofa spring 45. The catch finger is provided with a depending tooth 4.6which, when the lever 42 is thrust back, -as shown in Fig. 1, will holdthe lever against the return movement until the revolution of the camwheel has brought the stop pin 38 under the end of the catch finger 44,which rises as the stop pin passes thereunder and allows the lever 42 toresume its normal position.

In use, the cans are fed in succession to the tester wheel in anysuitable manner, and are successively clamped in position against thesealing heads. Each can in turn receives its charge of air underpressure and is carried around to practically a complete revolutionuntil the can is brought into communication with the tester. If thepressure within the can be reduced, by leakage, the gage spring will bemoved from the position shown in Fig. 2 to the position shown in Fig. 1,which movement is made possible by a slight lifting of the actuating pinwith each revolution of the cam wheel. As the pin is lifted, the hook 30on the trip finger 29 will be released from engagement with the tooth31, which allows the parts to assume a position shown in Fig. 1, andallows the actuating pin to fall by gravity, so that its cam head 35will occupy a position within the course of travel of the springsupported pin 36. hen said pin is brought into contact with the camsurface 35, it will be thrust back against the lever 42, which leverwill be locked against a return movement by the catch finger 44. Thismovement of the lever 42 serves to actuate suitable dischargingmechanism, preferably of the style shown in the application previouslyreferred to, whereby the defective can will be thrown out anddischarged. If, on the other hand, a perfect can be brought intoregister withthe tester, the proper degree of pressure will bemaintained in the gage spring, which will be bowed as indicated in Fig.2, so that, when the actuating finger is raised by the revolution of thecam wheel, the trip finger 29 will maintain its same position and engageand suspend the actuating pin after it has been released by the camwheel.

In testing cans of different sizes, it is necessary to regulate thedegree of pressure of the lever 26 so that, regardless of the size ofthe cans being tested, the lever will have just a sufiicient amount ofmovement to effect the suspension of the pin 32; and, in order to adjustthe mechanism to such varying conditions and prevent an excess ofmovement which would carry the hooked finger 30 too far under the tooth31, the adjusting screw is provided by the regulation of which openingin its lower end. The stop OFFICE ALBERT Hf} NELIiER, OFFAIRFIELD,-IOWJASTOP FOB QVERHEAD'QABBIEKS.

To all wiwm itmay co /went:

Be it known that I,ALBERT H. NELLER,. residing at Fairfield, in thecounty of Jefferson and State of Iowa, have invented a new and usefulImprovement in Stops for Overhead Carriers, of which the following is aspecification.

My invention relates to stops adapted to arrest the movement ofa'carrier on' an overhead track, and it consists of the improvement setforth in this specification, and more particularly pointed out in theclaims.

In the accompanying drawings forming a part of this specification,Figure 1 is, a side view of a portion of an overhead track and carrierwith stops embodying my invention. Fig. 2 is the same showing thecarrier'in'a different position on the track, a portion of its travelingwheel beingbroken away, Fig. 3 is an enlarged transverse section on line3-3 of Fig. l. Figs; Land 5 are the same on lines 47-4 and 5-5 of Fig.1.

Referring to the drawings, 'A-represents' an overhead track-wire havingone of its: ends connected 'in the usual way by means of a tension boltB to the upper end of a post P. 1

C is a portion of the frame of a carrier having a wheel V adapted to runon the track-wire A.

S is a stop adapted to arrest the move ment of the carrier by coming incontact with the wheel W. It is made slidable on the track and isprovided with a concave port-ion immediately above the track which isadapted to fit the groove of the wheel, particularly as shown in Fig. 2.

H represents a holder which is rigidly secured to the track-wire. It ispreferably made of two similar pieces held together by bolts I and isprovided with a longitudnal is also preferably made of two pieces heldtogether by bolts or rivets J. It is also provided with an opening inits lower end in which the end of a rod R is inserted and is held inplace by a bolt K. A compression coiled spring L is placed on the rod Bso it will abut the lower portion of the stop S.

H is a holder preferably made of two parts with coinciding transversegrooves in its inner faces at each end. The grooves at one end are madeto tightly clamp upon the track A, and at the other to slidably hold thefree end of the rod R which is kept in ,Specification'of Letters Patent.Patented J 3, 1,; 4 19 10, Application med September 13;1909. Serialitatfljs'zi'.

place 'hyia 'pin or key The parts of 'the holder H are held together bythe bolts I. The stop S'beingslidable on the blackwire, the impact "ofthe carrier against it will'cause the rod to slide in the opening oftheholder and th'e'spring' L will be compressed'thereby; I Thi's'willeaseoff the'mor'n'entum ofthe carrier'again the st p a the recoilofthe'spring will causethe carrier, o. re oun an "to' star t b itsreturn trip'on the track; The'abutting portion of'the stop S being 'madeto fit the groove. ,ofithe wheel, the '1at ter"wi 11 not be jinj ired byits impact against the fQIlIlQlf.

The contaetin portion of thestop is held in irop'er' *jpo i idni to: egage the g o v of the wheel part yb'y 'I ans f h {holder H and"also,bytheweigh-t- Of'the rod R and spring. L and' thfe portlon of thestop below the track-wire. "Inaddition to' this", it is provided withv aprojecting portion T over which" the 1 wheel will pass in coming intocontact 'with thestop; Theend'of this portion is -pointedfand its bodyis widened and rounded below the' track wire, so that it will come incontact with the flanges of the wheel W, the lower portion of which isshown by dotted lines in Fig. 5.- If by any means the stop should getturned to one side so that its contacting portion would not enter thegroove of the wheel, the upraised side of the projecting end T wouldcome in contact with the adjacent flange of the wheel and the weight ofthe carrier would press it down to its proper place and the stop wouldthus be righted before it engages the whee i As before stated it ispreferable that the stop S should be made of two adjoining and similarparts, and when this is done the projecting end T will also be in twoparts, and each part will be extended out beyond the edge of thetrack-wire so it may come in contact with the adjacent flange of thewheel. It is'also' preferable that the end of the rod R which isinserted in the lower end of the stop S'should be flattened and that theopening therein should be made to correspond therewith.

What I claim is 1. The combination of an overhead track, a carrier torun thereon, a stop slidable on the track and adapted to come in contactwith the carrier, a rod running parallel with the track secured tothestop, a coiled spring r H appliedto the rodfiatwo part holderhavmgcoinciding transverse grooves adapted to clamp on the track'inthe-innerfacesiof one;

end, and similar grooves in the inner faces of the other end adapted toslidablyhold the free end of the rod therein, and means to clamp the.partsitogetherfi 1 w v 2. The combination gianoverhead track, a carrierhaving a wheel to run thereon, a stop having acontacting end adapted tofit the groove of the wheel and [resilient means :having, one end-applied to theitr ack and I the other end connected to the I 3. Thecombination of an' 'overhead track, a carrier having a wheel to'runthereon, a stop having a cont-acting end adapted to fit the groove ofthe wheel'and concave resilient means having one end applied? to thetrack and the other end connectedltothe stop. H

4. The combination of'anoverhead track,

a carrier having aJWh'eel to' run-thereon, a

stop havinga contacting endad apted to fit the groove of the wheellandairod running parallel with the track secured to therear end of thestop, a coil sprin'g'placed upon the rod, a holder rigidlysecured to'the track and the free end of the rodjslidably passed v througlranopenin'inflthe holder. l I

5. The'combination of an qverhead traek, a carrier having 'a' wheel to'runthereon, a

stop having a contacting end; adapted to' fit. l I

v Witnesses:

the groove of thefivvheeland u'iider it projecting end running'suhstantia1ly" parallel with the track and also adapted to fit the l Tgroove in-thetwheel so that in passingover it the flanges of the wheelwill equalize the relativepositions;ofthe sides and will bring thecontacting portion of the stop in position to entercthe groove of thewheel.

6. The combination of an overhead track, .a carrier having a wheel torun'thereon, a

stop having a contacting end adapted to fit the groove of the Wheel andunder it a projecting end running substantially. parallel with the trackand widened beyond the sides of the .track' so that in passing overitthe flanges of the wheel will equalize the relative positiontof thesides and Will bring the contactinglportion of the stop in position toen- I ter the groove of the wheel.

7 The combination of anoverhead track, a carrier having a wheel to runthereon, a

two part 'stop applied to the track-and slidflanges of the wheel .willequalize their relative positions and will bringIthe contacting p rtion'of the stop in position to enter the groove the wheel.

ALBERT 1-1. NELLER.

v F. H. HIGBY, v

LAURA J. KAMP.

